gollum/gollum · info

Not found.

Error message

Not found.

What it means

not_found_proc builds a bare Rack 404 response - body 'Not found.', Content-Type text/html, explicit Content-Length - and is used as the fallback app handed to Rack::Static for the MathJax mount (app.rb line 176) and the static assets mount (line 183). When a requested file is not on disk under those roots, this proc answers; there is no gollum error page and no logging.

Source

Thrown at lib/gollum/helpers.rb:62

    def clean_url(url)
      return url if url.nil?
      url.gsub('%2F', '/').gsub(%r{/{2,}}, '/').gsub(%r{^/}, '')
    end

    def forbid(msg = "Forbidden. This wiki is set to no-edit mode.")
      @message = msg
      status 403
      halt mustache :error
    end

    def not_found(msg = nil)
      @message = msg || "The requested page does not exist."
      status 404
      return mustache :error
    end
    
    def not_found_proc
      not_found_msg = 'Not found.'
      Proc.new {[404, {'Content-Type' => 'text/html', 'Content-Length' => not_found_msg.length.to_s}, [not_found_msg]]}
    end
    
    def emoji(name)
      if emoji = Gemojione.index.find_by_name(name)
        IO.read(EMOJI_PATHNAME.join("#{emoji['unicode'].downcase}.png"))
      else
        fail ArgumentError, "emoji `#{name}' not found"
      end
    end
  end
end

View on GitHub (pinned to d00fefc89b)

Solutions

1. Configure MathJax properly (gollum --mathjax / wiki_options) and verify the directory actually contains the requested files
2. Fix or remove broken asset URLs in your templates
3. Expect the plain 'Not found.' body (not HTML) from these paths when debugging

asset = File.join(static_root, env['PATH_INFO'].to_s)
File.file?(asset) ? File.read(asset) : nil
# serve only when the file exists; otherwise expect the bare 'Not found.' 404

When it happens

Trigger: Requesting /mathjax/... paths when the MathJax option/path is unconfigured or its directory is incomplete; requesting any static asset filename that does not exist on disk.

Common situations: Package installs where MathJax assets are not bundled or the :mathjax option points at a partial directory; proxies and scanners probing asset paths; upgraded gollum versions with moved assets.

Related errors

• Invalid commit: #{@version}
• The requested page does not exist.
• The requested page does not exist.
• Changing this resource is not allowed.
• The file you are trying to upload already exists.

AI-assisted analysis of gollum/gollum@d00fefc89b (2026-08-21). Data as JSON: /api/errors/aa8e27def1961ea7. Report an issue: GitHub.